down_m.comp (presets M and L) unpacked the block's 16x100 source texels into
a shared tile, waited for it, filtered the rows from there and waited again.
Each invocation of the horizontal pass now loads the ten packed texels of
four output columns of one source row straight into registers and filters
them (200 such items for the block's 512 invocations): no shared source tile
(12.5 KiB) and one barrier fewer. 15 -> 5 KiB of shared memory, 36 -> 17
shared-memory instructions, 36 -> 48 vector registers (32 waves as before).
An output column's parity stays a run-time value (gl_NumWorkGroups.z - 1
added, the dispatch's z count is 1): with constant weights the compiler
shares products between neighbouring filters and splits their fused
multiply-adds, and 30% of the output pixels change (62 dB) - that build is
the positive control. ACO now unpacks with a fused multiply-convert
(v_fma_mix*_f16: one rounding instead of f32, then binary16), which gives
the same value for each of the 2048 / 1024 codes of a channel (checked
exhaustively, HDR and LDR constants).
Every output frame byte-identical (M and L, HDR and LDR, and the RGB10
output variant bound in the plain one's place; 1280x720 -> 1440p, 1114x626
-> 1080p, 1920x1080 -> 1440p, the stress inputs). Only down_m.spv and
down_m_rgb10.spv change.
RX 9070 XT, d4r-m, interleaved, downsample stage: 720p -> 1440p 102 -> 91 us
(L; M 117 -> 113), 1114x626 -> 1080p 62 -> 47 (L 61 -> 47); noise (the stress
inputs, whose output does not compress) unchanged, 144 -> 144 (L 139 -> 138).
Frame (L) 2213 -> 2202 us and 1963 -> 1951. Two or eight columns per
invocation instead of four: 92 / 93 us.
Signed-off-by: itchyfeetleech <[email protected]>
A standalone Vulkan inference engine (engine/) for DLSS presets K and M that
runs from weights extracted from the user's own nvngx_dlss.dll, with d4r's
own input, network and reconstruction shaders or the native HIP network
layers, recorded into the game's command list by the shim. Opt-in
([Engine] Enabled / D4R_ENGINE=1); anything uncovered falls back to the
CUDA/ZLUDA path with the reason logged.
Byte-identical to NGX's CUDA backend under the phase-capable reference
(1706x960 -> 2560x1440, native HIP network, eleven frames, RX 9070 XT):
- K render- and display-resolution motion vectors, HDR and LDR
- K game-supplied exposure and automatic exposure with any pre-exposure
and exposure scale (one residual: effective exposure exactly 2 or 4)
- K and M with the DLSS indicator's inverted-axis parameters
- M with any exposure settings (NGX ignores them for M)
K packages need the current compile_k.py (marker D4RO0003).
Also: HIP shared buffers are pooled across feature recreation (ROCm leaks
destroyed imports), hipnet.bin must match the preset, M-only games do not
load the K model, install_d4r_runtime.sh stages k, k-ldr, m, m-ldr with
hip/, the activation table has a generator (gen_activation_m.py), and
package_release.sh can bundle the engine's shaders (never its weights).
Signed-off-by: woutermans <[email protected]>
itchyfeetleech